EP1189458A2
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EP
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Correction curve generating method, image display unit and storage medium
Assignee: Seiko Epson Corp
•
Filing: 2001-09-13
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Granted: —
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Expires: 2021-09-13
Abstract
Abstract It is intended to provide an image processing method, an image display unit, and a storage medium, capable of effecting an appropriate color reproduction even with a change in color of a projection plane. In an image display unit according to the present invention which applies a desired image processing to inputted image data and then displays the image, a reflection characteristic for each color component of an output provided from the image display unit and reflected by a predetermined projection plane and a reflection characteristic for each color component of the output from the image display unit and reflected by a reference projection plane are measured by a measuring means. Further, by a correction curve generating means there is generated a correction curve for correcting the inputted image data so as to eliminate a difference between the measured reflection characteristic for each color component reflected by the predetermined projection plane and the reflection characteristic for each color component reflected by the reference projection plane. With the correction curve, an image processing is performed for the image data inputted to the image display unit, taking into account the characteristic of the projection plane on which an output from the image display unit is projected.
Inventors
- 👤 Masashi Kanai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 11:17
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/73
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
142 words
A method for generating a correction curve for correcting image data
inputted to an image display unit, taking into account characteristics of a
projection plane on which an output from said image display unit is
projected, said method comprising: a measuring step of measuring a reflection characteristic for each
color component of an output provided from said image display unit and
reflected by a predetermined projection plane and a reflection characteristic
for each color component of the output provided from said image display and
reflected by a reference projection plane; and a correction curve generating step of generating a correction curve
for correcting the inputted image data so as to eliminate a difference
between the measured reflection characteristic for each color component
reflected by the predetermined projection plane and a reflection
characteristic for each color component reflected by a reference projection
plane.
Claim 2
Dependent Claim
94 words
An image processing method for image data inputted to an image
display unit, taking into account characteristics of a projection plane with
an output from said image display unit projected thereon, wherein said
method corrects input image data by using a correction curve for
eliminating a difference between a reflection characteristic for each color
component of an output provided from said image display unit and reflected
by a predetermined projection plane and a reflection characteristic for each
color component of the output provided from said image display and
reflected by a reference projection plane.
Claim 3
Dependent Claim
21 words
An image processing method according to claim 2, which uses a
plurality of correction curves for a plurality of projection planes.
Claim 4
Dependent Claim
27 words
An image processing method according to claim 2 or claim 3,
wherein the amount of correction of input image data corrected by said
correction curve(s) is adjustable.
Claim 5
Dependent Claim
28 words
An image processing method according to any one of claims 2 to 4,
wherein said correction curve(s) is subjected to a rounding process in a high
graduation region.
Claim 6
Dependent Claim
17 words
An image processing method according to claim 5, wherein the
degree of said rounding process is adjustable.
Claim 7
Dependent Claim
63 words
An image processing method according to any one of claims 3 to 6,
including a selection step of selecting one correction curve from among said
plural correction curves on the basis of a reflection characteristic for each
color component reflected by a projection plane, and wherein an image
processing is performed for input image data on the basis of the selected
correction curve.
Claim 8
Dependent Claim
30 words
An image processing method according to claim 7, further including
a step of inputting the reflection characteristic for each color component
reflected by the projection plane in said selection step.
Claim 9
Dependent Claim
30 words
An image processing method according to claim 7, further including
a step of measuring the reflection characteristic for each color component
reflected by the projection plane in said selection step.
Claim 10
Dependent Claim
87 words
An image display unit for performing an image processing for an
inputted image data, taking into account characteristics of a projection
plane, wherein said image display unit corrects input image data by using a
correction curve for eliminating a difference between a reflection
characteristic for each color component of an output provided from said
image display unit and reflected by a predetermined projection plane and a
reflection characteristic for each color component of the output provided
from said image display and reflected by a reference projection plane.
Claim 11
Dependent Claim
158 words
An image display unit for performing an image processing for an
inputted image data, taking into account characteristics of a projection
plane, wherein the image display unit performs the image processing for the
inputted data based on a correction curve, which is sequentially generated
by sequentially repeating a method for generating the correction curve
comprising: a measuring step of measuring a reflection characteristic for each
color component of an output provided from said image display unit and
reflected by a predetermined projection plane and a reflection characteristic
for each color component of the output provided from said image display and
reflected by a reference projection plane; and a correction curve generating step of generating a correction curve
for correcting the inputted image data so as to eliminate a difference
between the measured reflection characteristic for each color component
reflected by the predetermined projection plane and a reflection
characteristic for each color component reflected by a reference projection
plane.
Claim 12
Dependent Claim
21 words
An image display unit according to claim 10, which uses a plurality
of correction curves for a plurality of projection planes.
Claim 13
Dependent Claim
162 words
An image display unit for performing an image processing for an
inputted image data, taking into account characteristics of a projection
plane, wherein the image display unit comprises a storage means for storing
a plurality of correction curves, which are generated by repeating a method
for generating the correction curve with respect to a plurality of projection
plane, comprising: a measuring step of measuring a reflection characteristic for each
color component of an output provided from said image display unit and
reflected by a predetermined projection plane and a reflection characteristic
for each color component of the output provided from said image display and
reflected by a reference projection plane; and a correction curve generating step of generating a correction curve
for correcting the inputted image data so as to eliminate a difference
between the measured reflection characteristic for each color component
reflected by the predetermined projection plane and a reflection
characteristic for each color component reflected by a reference projection
plane.
Claim 14
Dependent Claim
27 words
An image display unit according to claim 10 or claim 12, wherein the
amount of correction of input image data corrected by said correction
curve(s) is adjustable.
Claim 15
Dependent Claim
28 words
An image display unit according to any one of claims 10 to 14,
wherein said correction curve(s) is subjected to a rounding process in a high
graduation region.
Claim 16
Dependent Claim
17 words
An image display unit according to claim 15, wherein the degree of
said rounding process is adjustable.
Claim 17
Dependent Claim
63 words
An image display unit according to any one of claims 12 to 16,
including a selection means of selecting one correction curve from among
said plural correction curves on the basis of a reflection characteristic for
each color component reflected by a projection plane, and wherein an image
processing is performed for input image data on the basis of the selected
correction curve.
Claim 18
Dependent Claim
30 words
An image display unit according to claim 17, further including a
means of inputting the reflection characteristic for each color component
reflected by the projection plane in said selection means.
Claim 19
Dependent Claim
30 words
An image display unit according to claim 17, further including a
means of measuring the reflection characteristic for each color component
reflected by the projection plane in said selection means.
Claim 20
Dependent Claim
109 words
A computer-readable medium having a program of instructions for
execution by the computer to perform an image processing for image data
inputted to an image display unit, taking into account characteristics of a
projection plane with an output from said image display unit projected
thereon, wherein said image processing corrects input image data by using a
correction curve for eliminating a difference between a reflection
characteristic for each color component of an output provided from said
image display unit and reflected by a predetermined projection plane and a
reflection characteristic for each color component of the output provided
from said image display and reflected by a reference projection plane.
Claim 21
Dependent Claim
20 words
A computer-readable medium according to claim 20, which uses a
plurality of correction curves for a plurality of projection planes.
Claim 22
Dependent Claim
26 words
A computer-readable medium according to claim 20 or claim 21,
wherein the amount of correction of input image data corrected by said
correction curve(s) is adjustable.
Claim 23
Dependent Claim
27 words
A computer-readable medium according to any one of claims 20 to 22,
wherein said correction curve(s) is subjected to a rounding process in a high
graduation region.
Claim 24
Dependent Claim
16 words
A computer-readable medium according to claim 23, wherein the
degree of said rounding process is adjustable.
Claim 25
Dependent Claim
62 words
A computer-readable medium according to any one of claims 21 to 24,
including a selection processing of selecting one correction curve from
among said plural correction curves on the basis of a reflection
characteristic for each color component reflected by a projection plane, and
wherein an image processing is performed for input image data on the basis
of the selected correction curve.
Claim 26
Dependent Claim
29 words
A computer-readable medium according to claim 25, further
including a processing of inputting the reflection characteristic for each
color component reflected by the projection plane in said selection
processing.
Claim 27
Dependent Claim
29 words
A computer-readable medium according to claim 25, further
including a processing of measuring the reflection characteristic for each
color component reflected by the projection plane in said selection
processing.
Claim 28
Dependent Claim
93 words
A computer-readable medium storing a correction curve for
performing an image processing for image data inputted to an image display
unit, taking into account characteristics of a projection plane with an output
from said image display unit projected thereon, wherein said correction
curve eliminates a difference between a reflection characteristic for each
color component of an output provided from said image display unit and
reflected by a predetermined projection plane and a reflection characteristic
for each color component of the output provided from said image display and
reflected by a reference projection plane.
Claim 29
Dependent Claim
20 words
A computer-readable medium according to claim 28, which uses a
plurality of correction curves for a plurality of projection planes.
Claim 30
Dependent Claim
26 words
A computer-readable medium according to claim 28 or claim 29,
wherein the amount of correction of input image data corrected by said
correction curve(s) is adjustable.
Claim 31
Dependent Claim
27 words
A computer-readable medium according to any one of claims 28 to 30,
wherein said correction curve(s) is subjected to a rounding process in a high
graduation region.
Claim 32
Dependent Claim
16 words
A computer-readable medium according to claim 31, wherein the
degree of said rounding process is adjustable.
References Cited (Backward Citations)
No citation records indexed.
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